Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
In the famous Haber process (Figure SAT12.4PI) to manufacture ammonia, the reaction is carried out at pressures of 800 to 1000 atm and at 500 to 600°C using a suitable cata- lyst. Only a small fraction of the material entering the reactor reacts on one pass, so recy- cle is needed. Also, because the nitrogen is obtained from the air, it contains almost 1% rare gases (chiefly argon) that do not react. The rare gases would continue to build up in 72 Recycle, Bypass, Purge, & the Industrial Application Material Balances Chap. 12 the recycle until their effect on the reaction equilibrium would become adverse. There- fore, a small purge stream is used. 3H2 + N2 + 2NHS N2 - Separator - NH3 (Liquid) H2 Reoctor Ar N2, H2, Ar Purge (Gas) Figure SAT12.4P1 The fresh feed of gas composed of 75.16% H2, 24.57% N2, and 0.27% Ar is mixed with the recycled gas and enters the reactor with a composition of 79.52% H2. The gas stream leaving the ammonia separator contains 80.01% H, and no ammonia. The product ammonia contains no dissolved gases. Per 100 moles of fresh feed: a. How many moles are recycled and purged? b. What is the percent conversion of hydrogen per pass?

In the famous Haber process (Figure SAT12.4PI) to manufacture ammonia, the reaction is carried out at pressures of 800 to 1000 atm and at 500 to 600°C using a suitable cata- lyst. Only a small fraction of the material entering the reactor reacts on one pass, so recy- cle is needed. Also, because the nitrogen is obtained from the air, it contains almost 1% rare gases (chiefly argon) that do not react. The rare gases would continue to build up in 72 Recycle, Bypass, Purge, & the Industrial Application Material Balances Chap. 12 the recycle until their effect on the reaction equilibrium would become adverse. There- fore, a small purge stream is used. 3H2 + N2 + 2NHS N2 - Separator - NH3 (Liquid) H2 Reoctor Ar N2, H2, Ar Purge (Gas) Figure SAT12.4P1 The fresh feed of gas composed of 75.16% H2, 24.57% N2, and 0.27% Ar is mixed with the recycled gas and enters the reactor with a composition of 79.52% H2. The gas stream leaving the ammonia separator contains 80.01% H, and no ammonia. The product ammonia contains no dissolved gases. Per 100 moles of fresh feed: a. How many moles are recycled and purged? b. What is the percent conversion of hydrogen per pass?

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
See similar textbooks
icon
Related questions
Question
1. In the famous Haber process (Figure SAT12.4P1) to manufacture ammonia, the reaction is carried out at pressures of 800 to 1000 atm and at 500 to 600°C using a suitable cata- lyst. Only a small fraction of the material entering the reactor reacts on one pass, so recy- cle is needed. Also, because the nitrogen is obtained from the air, it contains almost 1% rare gases (chiefly argon) that do not react. The rare gases would continue to build up in 372 Recycle, Bypass, Purge, & the Industrial Application Material Balances Chap. 12 the recycle until their effect on the reaction equilibrium would become adverse. There- fore, a small purge stream is used. 3H2 + N2 2NH3 N2 H2 Reactor Separator NH3 (Liquid} Ar N2, H2, Ar Purge (Gas) Figure SAT12.4P1 The fresh feed of gas composed of 75.16% H2, 24.57% N2, and 0.27% Ar is mixed with the recycled gas and enters the reactor with a composition of 79.52% H2. The gas stream leaving the ammonia separator contains 80.01% H2 and no ammonia. The product ammonia contains no dissolved gases. Per 100 moles of fresh feed: a. How many moles are recycled and purged? b. What is the percent conversion of hydrogen per pass?
Transcribed Image Text:1. In the famous Haber process (Figure SAT12.4P1) to manufacture ammonia, the reaction is carried out at pressures of 800 to 1000 atm and at 500 to 600°C using a suitable cata- lyst. Only a small fraction of the material entering the reactor reacts on one pass, so recy- cle is needed. Also, because the nitrogen is obtained from the air, it contains almost 1% rare gases (chiefly argon) that do not react. The rare gases would continue to build up in 372 Recycle, Bypass, Purge, & the Industrial Application Material Balances Chap. 12 the recycle until their effect on the reaction equilibrium would become adverse. There- fore, a small purge stream is used. 3H2 + N2 2NH3 N2 H2 Reactor Separator NH3 (Liquid} Ar N2, H2, Ar Purge (Gas) Figure SAT12.4P1 The fresh feed of gas composed of 75.16% H2, 24.57% N2, and 0.27% Ar is mixed with the recycled gas and enters the reactor with a composition of 79.52% H2. The gas stream leaving the ammonia separator contains 80.01% H2 and no ammonia. The product ammonia contains no dissolved gases. Per 100 moles of fresh feed: a. How many moles are recycled and purged? b. What is the percent conversion of hydrogen per pass?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Reactive Processes
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The
SEE MORE TEXTBOOKS